They might have to adapt to the unique rules and powers in the DC Universe. For example, if it's a normal human from our world, they'd be shocked by the existence of superpowers like Superman's flight and strength. They could also get involved in the classic DC storylines, either as a helper or a disruptor.
They could try to stay under the radar and avoid getting involved with the superpowered battles at first. Maybe find a place like Gotham City and blend in with the normal population.
He would probably be seen as a very powerful and unique being. His chakra abilities could be mistaken for some kind of meta - human power. Maybe he'd team up with the Justice League to fight against powerful threats like Darkseid. His skills in combat and his ability to use shadow clones would give the League an edge in battles.
One idea could be a crossover where Vegeta ends up in Gotham City. He might initially be seen as a threat by Batman, but then they realize they can work together to take on a common enemy like Darkseid. Vegeta's combat skills and power would be a great asset in the DC universe filled with various threats.
No, they're not exactly the same. DC Comics is the original source of the characters and stories, while the DC Universe is a broader platform that includes various media adaptations and related content.
Naruto would likely be among the upper echelons of power. His jutsu and combat skills are formidable. For example, his Sage Mode gives him enhanced strength, speed, and perception, which would put him on par with some of the stronger DC heroes like Wonder Woman in terms of combat capabilities.
An ordinary person could try to find a powerful ally. Maybe team up with a group of smugglers like Han Solo and Chewbacca. They could offer protection and help you get around. Also, staying on a more civilized planet where there's some kind of law enforcement might be a good start.
Another idea is that Greninja gets exposed to some kind of meta - human - creating substance in the DC universe and gains new powers. It could then join the Teen Titans, sharing its unique Pokémon abilities with the group. It would be interesting to see how Greninja interacts with characters like Robin, Starfire, and Cyborg, and how it uses its powers in battles against the Titans' enemies.
Definitely not. The DC Universe app offers a wide range of video content related to DC characters and storylines. In contrast, the DC Comics app is dedicated to providing access to various comic books. They have different features and purposes.